<!DOCTYPE html>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=850043
-->
<head>
  <title>Test for Bug 850043</title>
  <script type="application/javascript" src="/MochiKit/packed.js"></script>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <script type="application/javascript" src="/tests/SimpleTest/EventUtils.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>

<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=850043">Mozilla Bug 850043</a>
<div id="display">
<textarea id="textarea">b&#x9080;&#xe010f;&#x8fba;&#xe0101;</textarea>
<div contenteditable id="edit">b&#x9080;&#xe010f;&#x8fba;&#xe0101;</div>
</div>
<div id="content" style="display: none">
</div>

<pre id="test">
</pre>
<script>
SimpleTest.waitForExplicitFinish();
SimpleTest.waitForFocus(() => {
  let fm = SpecialPowers.Cc["@mozilla.org/focus-manager;1"].
    getService(SpecialPowers.Ci.nsIFocusManager);

  let element = document.getElementById("textarea");
  element.setSelectionRange(element.value.length, element.value.length);
  element.focus();
  is(SpecialPowers.unwrap(fm.focusedElement), element, "failed to move focus");

  synthesizeKey("VK_END", { });
  synthesizeKey("a", { });
  is(element.value, "b\u{9080}\u{e010f}\u{8fba}\u{e0101}a", "a isn't last character");

  synthesizeKey("VK_BACK_SPACE", { });
  synthesizeKey("VK_BACK_SPACE", { });
  synthesizeKey("VK_BACK_SPACE", { });
  is(element.value, 'b', "cannot remove all IVS characters");

  element = document.getElementById("edit");
  element.focus();
  is(SpecialPowers.unwrap(fm.focusedElement), element, "failed to move focus");

  let sel = window.getSelection();
  sel.collapse(element.childNodes[0], element.textContent.length);

  synthesizeKey("a", { });
  is(element.textContent, "b\u{9080}\u{e010f}\u{8fba}\u{e0101}a", "a isn't last character");

  synthesizeKey("VK_BACK_SPACE", { });
  synthesizeKey("VK_BACK_SPACE", { });
  synthesizeKey("VK_BACK_SPACE", { });
  is(element.textContent, 'b', "cannot remove all IVS characters");

  SimpleTest.finish();
});
</script>
</body>
</html>
